Vadim V. 손정영 2024-01-13T00:02:16Z 2024-01-13T00:02:16Z 1999-06-29 https://pubs.kist.re.kr/handle/201004/99917 천연색　홀로그래픽　헤드　업　표시　장치 Patent 1999-06-29 1997-01-17 5,917,459 08/784,534 US 특허 한국과학기술연구원